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Respiratory Virus Report, Week 9 - ending March 2, 2024

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Organization: Public Health Agency of Canada

Please note that the Respiratory Virus Detection Surveillance System (RVDSS) is a sentinel laboratory surveillance system that does not capture all respiratory virus testing performed in Canada; differences may exist between the data presented in this report and provincial/territorial epidemiological reports. SARS-CoV-2 laboratory data is included in this report to facilitate the comparison of positivity with other respiratory viruses. Interpretation should be made with caution as testing practices differ among viruses.

For additional SARS-CoV-2 surveillance information, please refer to the COVID-19 epidemiology update.

Overall summary

In week 9 (week ending March 2, 2024) in Canada, participating RVDSS laboratories reported 2,319 detections of SARS-CoV-2 from 32,915 tests (7.0% positive). Among non-SARS-CoV-2 respiratory viruses, where test volumes are lower (range of 8,168 to 31,343 tests), activity of influenza is highest.

  • National SARS-CoV-2 percent positivity has been decreasing since mid-December 2023.
  • Influenza A percent positivity has decreased in recent weeks (2,144 detections; 6.8% positive) but remains higher than influenza B which is currently increasing (1,250 detections; 4.0% positive).
  • RSV percent positivity has decreased in recent weeks (1,042 detections; 3.8% positive).
  • Among other respiratory viruses, human coronavirus percent positivity is above average levels for this time of year (596 detections; 7.3% positive).
  • 34/35 sentinel laboratories reported surveillance data

On this page

Abbreviations:
ADV
Adenovirus
Atl
Atlantic Canada
BC
British Columbia
Can
Canada
EORLA
Eastern Ontario Regional Laboratory Association
EV/RV
Enterovirus/Rhinovirus
Flu
Influenza
Flu A(H1)pdm09
Influenza A(H1N1)pdm09
Flu A(H3)
Influenza A(H3N2)
Flu A(UnS)
Influenza A(Unsubtyped)
HCoV
Human coronavirus 229E/OC43/NL63/HKU1
HMPV
Human metapneumovirus
HPIV
Human parainfluenza virus
HSC
Health Sciences Centre
N.C.
Data not collected
N.R.
Data not reported for current week
ON
Ontario
PR
Prairies
P.H.O.L.
Public Health Ontario Laboratory
QC
Quebec
RSV
Respiratory syncytial virus
RVDSS
Respiratory Virus Detection Surveillance System
SARS-CoV-2
Severe acute respiratory syndrome coronavirus 2
Terr
Territories of Canada
UHN
University Health Network

Respiratory virus detections

Table 1: Respiratory virus detections for the week ending March 2, 2024 (surveillance week 2024-09)
Reporting Laboratory SARS-CoV-2 Tested SARS-CoV-2 Positive Flu Tested A(H1)pdm09 Positive A(H3) Positive A(UnS) Positive Total Flu A Positive Total Flu B Positive RSV Tested RSV Positive HPIV Tested HPIV 1 Positive HPIV 2 Positive HPIV 3 Positive HPIV 4 Positive Other HPIV Positive ADV Tested ADV Positive HMPV Tested HMPV Positive EV/RV Tested EV/RV Positive HCoV Tested HCoV Positive
Newfoundland 530 40 420 0 0 29 29 4 420 27 420 1 1 1 1 0 420 17 420 12 420 19 420 20
Prince Edward Island 220 7 214 0 0 11 11 19 214 28 30 1 0 0 0 0 30 3 30 1 30 3 30 8
Nova Scotia 1156 88 1048 0 0 114 114 13 926 38 32 0 0 0 0 0 32 0 32 0 32 3 32 3
New Brunswick 1086 75 1152 14 0 34 48 81 1152 81 105 0 0 0 1 0 105 5 105 9 105 12 105 7
Atlantic 2992 210 2834 14 0 188 202 117 2712 174 587 2 1 1 2 0 587 25 587 22 587 37 587 38
Région Nord-Est 1536 65 1677 0 0 152 152 83 753 58 93 0 0 0 0 0 93 3 92 9 N.C. N.C. 93 5
Québec-Chaudière-Appalaches 1608 68 2126 0 0 261 261 217 1980 82 682 0 0 0 1 0 697 19 683 34 N.C. N.C. 521 42
Centre-du-Québec 2184 103 2070 0 0 284 284 89 1024 57 33 0 0 1 0 0 33 4 33 3 N.C. N.C. 34 2
Montréal-Laval 2205 86 3095 0 0 304 304 41 2014 66 958 1 0 16 0 0 958 14 960 43 N.C. N.C. 958 70
Ouest du Québec 1339 91 841 0 0 97 97 27 815 17 23 0 0 1 0 0 23 0 23 1 N.C. N.C. 23 3
Montérégie 1604 98 1575 0 0 144 144 32 1574 43 7 0 0 0 0 0 7 0 7 0 N.C. N.C. 7 2
Province of Québec 10476 511 11384 0 0 1242 1242 489 8160 323 1796 1 0 18 1 0 1811 40 1798 90 N.C. N.C. 1636 124
P.H.O.L. - Ottawa 227 59 154 10 0 3 13 2 154 0 113 0 0 0 0 3 113 1 113 5 113 4 113 19
EORLA 1084 69 559 0 0 54 54 33 559 10 43 0 1 5 0 0 43 0 43 5 43 5 43 1
P.H.O.L. - Kingston 137 5 100 14 0 6 20 0 100 1 70 0 0 0 0 1 70 1 70 2 70 1 70 15
UHN / Mount Sinai Hospital 782 28 614 0 0 21 21 2 614 8 97 0 0 1 0 0 97 0 97 0 97 5 97 4
P.H.O.L. - Toronto 470 38 948 14 10 13 35 23 948 20 895 0 0 0 0 47 895 10 895 67 895 48 895 144
Sick Kids Hospital - Toronto 123 9 117 1 2 0 3 5 117 1 117 0 0 5 1 0 117 4 117 7 117 23 117 5
Shared Hospital Laboratory 1838 53 1461 28 10 10 48 36 1462 10 1453 0 0 0 0 11 1453 16 1453 15 1453 32 1453 37
P.H.O.L. - Sault Ste. Marie 7 0 12 0 0 1 1 0 12 1 11 0 0 0 0 0 11 0 11 0 11 0 11 1
P.H.O.L. - Timmins 44 10 52 0 1 2 3 0 52 0 38 0 0 0 0 1 38 0 38 0 38 1 38 4
St. Joseph's - London N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R.
P.H.O.L. - London 493 79 417 21 3 40 62 8 417 3 305 0 0 0 0 10 305 0 305 7 305 10 305 29
P.H.O.L. - Orillia 14 1 12 1 0 0 1 0 12 0 10 0 0 0 0 1 10 0 10 0 10 0 10 5
P.H.O.L. - Thunder Bay 55 9 35 0 0 1 1 2 35 0 29 0 0 0 0 0 29 0 29 1 29 0 29 1
P.H.O.L. - Sudbury 21 0 27 1 0 1 2 0 27 0 17 0 0 0 0 4 17 0 17 0 17 0 17 3
P.H.O.L. - Hamilton 162 9 145 5 3 5 13 3 145 0 131 0 0 0 0 12 131 4 131 6 131 18 131 11
P.H.O.L. - Peterborough 37 2 38 1 2 4 7 1 38 3 29 0 0 0 0 2 29 0 29 0 29 6 29 1
St. Joseph's - Hamilton 1774 69 1646 0 0 91 91 70 1646 18 1646 0 0 39 0 0 1646 13 1646 53 1646 81 0 0
Sault Area Hospital 197 29 116 1 0 0 1 1 116 6 85 0 0 0 1 0 85 1 85 2 85 1 85 11
Province of Ontario 7465 469 6453 97 31 252 376 186 6454 81 5089 0 1 50 2 92 5089 50 5089 170 5089 235 3443 291
Manitoba 1462 165 969 0 0 13 13 23 969 46 70 0 0 1 0 0 70 2 85 7 70 9 85 14
Saskatchewan 1689 137 1167 0 0 8 8 112 1001 68 413 1 0 7 0 0 413 6 413 28 413 25 413 27
Alberta 4641 356 4222 37 31 4 79 223 3993 143 1043 5 2 28 0 0 1043 10 977 3 1026 78 1043 47
Prairies 7792 658 6358 37 31 25 100 358 5963 257 1526 6 2 36 0 0 1526 18 1475 38 1509 112 1541 88
British Columbia 3973 457 4148 31 26 5 220 79 4013 177 1002 1 7 15 3 0 1002 30 1002 75 961 138 961 55
Yukon 54 2 39 0 0 0 4 1 39 1 N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C.
Northwest Territories 44 3 43 0 0 0 0 12 43 11 N.C. N.C. N.C. N.C. N.C. N.C. 43 5 43 0 43 2 N.C. N.C.
Nunavut 119 9 84 0 0 0 0 8 84 18 N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C.
Territories 217 14 166 0 0 0 4 21 166 30 N.C. N.C. N.C. N.C. N.C. N.C. 43 5 43 0 43 2 N.C. N.C.
CANADA 32915 2319 31343 179 88 1712 2144 1250 27468 1042 10000 10 11 120 8 92 10058 168 9994 395 8189 524 8168 596

The data in the RVDSS report represent surveillance data available at the time of writing. Data missing from the current week are denoted by N.R. Data not collected by reporting lab denoted by N.C.

Some specimens from Yukon (YT) are sent to reference laboratories in British Columbia and reported results reflect specimens identified as originating from YT.

Results from British Columbia comprise of specimens from the following sites: Children's and Women's Hospital Laboratory, Fraser Health Medical Microbiology Laboratory, Island Health, Providence Health Care, Vancouver Coastal Health sites, Victoria General Hospital, BCCDC Public Health Laboratory, Interior Health Authority sites and Northern Health Authority sites.

Due to different testing protocols of laboratories across Canada, influenza A subtype detection counts may not be included in total influenza A detection counts. Total influenza A and B positive counts are used to calculate percentage of tests positive.

Delays in the reporting of data may cause data to change retrospectively.

Table 2: Cumulative respiratory virus detections from August 27, 2023 to March 2, 2024 (surveillance weeks 2023-35 to 2024-09)
Reporting Laboratory SARS-CoV-2 Tested SARS-CoV-2 Positive Flu Tested A(H1)pdm09 Positive A(H3) Positive A(UnS) Positive Total Flu A Positive Total Flu B Positive RSV Tested RSV Positive HPIV Tested HPIV 1 Positive HPIV 2 Positive HPIV 3 Positive HPIV 4 Positive Other HPIV Positive ADV Tested ADV Positive HMPV Tested HMPV Positive EV/RV Tested EV/RV Positive HCoV Tested HCoV Positive
Newfoundland 17150 2642 12465 0 0 1265 1265 52 12465 801 12465 11 57 23 99 0 12465 215 12465 188 12465 1040 12465 277
Prince Edward Island 6194 697 3701 0 0 511 511 42 3701 309 416 3 0 0 8 0 415 24 405 6 415 112 399 17
Nova Scotia 39527 7904 26174 0 0 2182 2182 214 21459 1295 931 15 2 2 10 0 931 39 924 3 931 206 930 8
New Brunswick 29505 3631 27106 843 22 1798 2663 259 26702 1601 2385 7 4 1 26 0 2385 93 2385 40 2385 469 2385 89
Atlantic 92376 14874 69446 843 22 5756 6621 567 64327 4006 16197 36 63 26 143 0 16196 371 16179 237 16196 1827 16179 391
Région Nord-Est 47127 6873 41722 5 0 4501 4506 235 16161 1207 2060 14 12 10 16 0 2060 90 2017 66 N.C. N.C. 2060 57
Québec-Chaudière-Appalaches 56216 9167 35244 0 0 5112 5112 479 33954 2377 13662 21 9 11 12 0 14041 454 13662 332 N.C. N.C. 11395 330
Centre-du-Québec 68906 12186 30712 0 0 3941 3941 281 19082 1465 1036 15 8 14 7 0 1036 54 1036 39 N.C. N.C. 1065 38
Montréal-Laval 83763 13652 64961 4 2 5951 5957 169 42825 2655 22578 94 38 139 24 0 22578 447 22641 429 N.C. N.C. 22578 707
Ouest du Québec 46042 9883 18794 4 0 1850 1854 123 18611 1019 526 11 3 8 7 0 526 39 526 12 N.C. N.C. 526 22
Montérégie 44146 7840 34112 0 0 2881 2881 119 33048 1617 179 1 0 0 1 0 179 6 179 3 N.C. N.C. 179 3
Province of Québec 346200 59601 225545 13 2 24236 24251 1406 163681 10340 40041 156 70 182 67 0 40420 1090 40061 881 N.C. N.C. 37803 1157
P.H.O.L. - Ottawa 9621 3532 6443 269 53 143 342 15 6437 127 3839 0 0 0 0 65 3839 12 3837 50 3839 393 3837 145
EORLA 35902 4341 16302 0 0 1465 1465 155 16302 1096 1049 2 5 15 4 0 1024 11 1049 18 1049 195 1049 25
P.H.O.L. - Kingston 6721 2014 3675 125 17 84 200 3 3675 167 2588 0 0 0 0 41 2588 11 2588 10 2588 316 2588 52
UHN / Mount Sinai Hospital 30185 2927 18725 40 10 510 560 53 18725 199 997 0 0 8 2 0 997 1 997 2 997 44 997 32
P.H.O.L. - Toronto 17045 5341 30156 1098 890 279 1624 143 30147 1024 27549 0 0 0 0 796 27556 311 27534 375 27549 2669 27534 1128
Sick Kids Hospital - Toronto 3527 292 3139 100 95 20 215 26 3139 305 3139 14 12 55 19 0 3139 77 3139 65 3139 550 3139 88
Shared Hospital Laboratory 47014 4402 39964 773 505 264 1542 189 39970 1318 39788 0 0 0 0 239 34134 293 39823 154 39868 1332 39845 420
P.H.O.L. - Sault Ste. Marie 414 186 490 48 3 16 61 0 490 44 336 0 0 0 0 4 336 1 336 0 336 21 336 29
P.H.O.L. - Timmins 970 278 935 56 9 26 80 0 935 60 751 0 0 0 0 22 751 4 751 4 751 47 751 20
St. Joseph's - London 23380 3287 11728 0 0 873 873 89 11728 693 1722 0 0 0 0 19 1741 26 1741 11 1743 208 1741 42
P.H.O.L. - London 13064 3976 9515 435 128 141 527 40 9512 461 7562 0 0 0 0 195 7562 34 7560 57 7562 669 7560 236
P.H.O.L. - Orillia 524 138 1208 71 17 11 99 0 1205 74 1144 0 0 0 0 27 1144 15 1144 18 1144 144 1144 16
P.H.O.L. - Thunder Bay 1671 480 1012 57 0 8 37 4 1009 27 843 0 0 0 0 26 843 5 843 23 843 53 843 9
P.H.O.L. - Sudbury 629 238 740 32 1 20 53 1 738 21 499 0 0 0 0 11 500 1 499 1 499 43 499 11
P.H.O.L. - Hamilton 6563 2020 5280 134 65 83 228 24 5279 170 3925 0 0 0 0 120 3925 73 3924 62 3925 511 3924 160
P.H.O.L. - Peterborough 2061 665 2046 202 204 65 141 10 2036 220 1626 0 0 0 0 48 1626 35 1626 24 1626 271 1626 33
St. Joseph's - Hamilton 52316 5581 46095 0 0 2887 2887 360 46095 1717 46095 0 0 299 0 0 46095 289 46095 344 46095 2675 0 0
Sault Area Hospital 5147 728 3460 167 10 49 226 7 3453 189 2714 24 0 11 17 0 2665 33 2665 7 2665 239 2675 44
Province of Ontario 256754 40426 200913 3607 2007 6944 11160 1119 200875 7912 146166 40 17 388 42 1613 140465 1232 146151 1225 146218 10380 100088 2490
Manitoba 44464 6651 33559 140 11 1797 1948 153 33559 1240 2516 0 10 13 41 0 2516 107 3241 115 2516 490 3241 86
Saskatchewan 57717 6924 38689 101 8 5309 5418 810 34946 1341 12438 26 9 38 20 0 12438 249 12438 673 12438 1235 12438 260
Alberta 149453 18629 128555 11626 696 578 12970 1671 119786 5638 35406 123 86 275 3 0 35398 425 34461 26 34851 3239 35405 729
Prairies 251634 32204 200803 11867 715 7684 20336 2634 188291 8219 50360 149 105 326 64 0 50352 781 50140 814 49805 4964 51084 1075
British Columbia 103973 14288 104506 3915 672 239 7984 492 102119 5352 24223 111 164 171 162 0 24225 753 24110 823 23231 3635 23208 606
Yukon 1511 171 975 30 12 0 54 3 967 44 N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C.
Northwest Territories 1008 66 947 166 6 1 173 29 947 137 N.C. N.C. N.C. N.C. N.C. N.C. 748 38 748 7 947 119 N.C. N.C.
Nunavut 3360 297 2331 426 30 51 507 33 2331 303 N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C.
Territories 5879 534 4253 622 48 52 734 65 4245 484 N.C. N.C. N.C. N.C. N.C. N.C. 748 38 748 7 947 119 N.C. N.C.
CANADA 1056816 161927 805466 20867 3466 44911 71086 6283 723538 36313 276987 492 419 1093 478 1613 272406 4265 277389 3987 236397 20925 228362 5719

The data in the RVDSS report represent surveillance data available at the time of writing. Data not collected by reporting lab denoted by N.C.

Some specimens from Yukon (YT) are sent to reference laboratories in British Columbia and reported results reflect specimens identified as originating from YT.

Results from British Columbia comprise of specimens from the following sites: Children's and Women's Hospital Laboratory, Fraser Health Medical Microbiology Laboratory, Island Health, Providence Health Care, Vancouver Coastal Health sites, Victoria General Hospital, BCCDC Public Health Laboratory, Interior Health Authority sites and Northern Health Authority sites.

Due to different testing protocols of laboratories across Canada, influenza A subtype detection counts may not be included in total influenza A detection counts. Total influenza A and B positive counts are used to calculate percentage of tests positive.

Delays in the reporting of data may cause data to change retrospectively. Due to these delays, the sum of weekly report totals do not add up to cumulative totals.

Positive respiratory virus tests historical comparison

Figure 1: Positive severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), influenza, and respiratory syncytial virus tests (%) reported by participating laboratories in Canada by surveillance week compared to average and range from 2014-2015 to 2019-2020 season
Figure 1

Shaded area represents the maximum and minimum % of respiratory virus tests positive reported by week from seasons 2014-2015 to 2019-2020

Note: Changes to testing practices during the COVID-19 pandemic may cause substantial changes to indicator estimates from previous years. Collection of laboratory testing practice meta-data to understand these changes is ongoing. Interpret trends with caution.

Note: SARS-CoV-2 surveillance was integrated into RVDSS at the beginning of the 2022-2023 season; no prior data is available for historical comparison.

Note: Data from week 11 of the 2019-2020 season onwards are excluded from the historical comparison due to the COVID-19 pandemic.

Figure 1: Positive severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), influenza, and respiratory syncytial virus tests (%) reported by participating laboratories in Canada by surveillance week compared to average and range from 2014-2015 to 2019-2020 season
Week Week end 2023-2024 SARS-CoV-2% 2022-2023 SARS-CoV-2% 2023-2024 A% 2022-2023 A% 2021-2022 A% Max A% Base Min A% Base Av A% Base 2023-2024 B% 2022-2023 B% 2021-2022 B% Max B% Base Min B% Base Av B% Base 2023-2024 RSV% 2022-2023 RSV% 2021-2022 RSV% Max RSV% Base Min RSV% Base Av RSV% Base
35 2023-09-02 14.40 13.40 0.69 0.18 0.04 1.60 0.11 0.67 0.06 0.02 0.00 0.28 0.00 0.14 0.58 1.12 4.43 1.34 0.38 0.61
36 2023-09-09 15.92 13.07 0.43 0.14 0.01 2.11 0.23 0.99 0.06 0.04 0.00 0.55 0.00 0.15 0.71 1.12 6.61 1.09 0.22 0.62
37 2023-09-16 16.49 12.74 0.48 0.23 0.03 1.59 0.35 0.87 0.03 0.01 0.00 0.19 0.04 0.12 0.82 1.06 7.59 1.37 0.38 0.65
38 2023-09-23 18.60 13.62 0.51 0.48 0.00 2.15 0.43 1.17 0.02 0.02 0.00 0.21 0.00 0.14 1.15 1.47 7.16 1.24 0.37 0.67
39 2023-09-30 19.59 14.44 0.51 0.67 0.01 2.65 0.50 1.52 0.09 0.03 0.00 0.29 0.09 0.18 1.14 2.14 8.48 1.29 0.51 0.72
40 2023-10-07 19.81 15.06 0.64 0.96 0.00 2.17 1.01 1.58 0.05 0.03 0.02 0.20 0.05 0.11 1.35 2.54 8.53 1.39 0.34 0.71
41 2023-10-14 17.55 16.59 0.49 1.42 0.03 2.66 1.05 1.56 0.03 0.01 0.03 0.36 0.03 0.16 1.80 3.65 9.54 1.74 0.58 1.03
42 2023-10-21 17.78 15.39 0.73 2.36 0.03 2.96 0.77 1.92 0.08 0.05 0.02 0.45 0.05 0.25 2.38 4.63 8.18 2.11 0.63 1.25
43 2023-10-28 17.89 15.78 1.16 5.47 0.03 5.19 0.68 2.59 0.10 0.03 0.02 0.55 0.06 0.23 3.25 6.76 8.11 2.16 0.55 1.41
44 2023-11-04 17.74 13.91 2.63 10.75 0.10 8.32 1.08 3.35 0.10 0.03 0.10 0.71 0.12 0.31 4.07 7.77 7.82 3.35 0.83 2.07
45 2023-11-11 18.17 12.43 4.93 16.19 0.07 9.83 1.18 4.19 0.14 0.04 0.06 0.97 0.22 0.44 5.12 7.68 7.03 4.43 1.29 2.71
46 2023-11-18 18.80 11.96 7.24 20.23 0.10 13.89 1.42 5.43 0.16 0.05 0.06 1.49 0.09 0.57 5.85 7.54 7.18 6.33 1.38 3.60
47 2023-11-25 19.31 11.76 8.81 24.27 0.13 15.25 1.25 6.91 0.12 0.04 0.07 2.13 0.13 0.80 6.81 6.66 8.10 8.69 1.79 4.79
48 2023-12-02 18.03 12.12 11.62 24.04 0.19 18.07 0.76 9.40 0.26 0.03 0.15 3.18 0.08 1.20 6.99 6.87 8.92 9.47 3.11 6.08
49 2023-12-09 17.53 12.61 14.74 21.12 0.23 19.13 1.43 11.34 0.29 0.06 0.05 4.21 0.19 1.60 7.38 7.29 10.09 12.26 5.40 7.54
50 2023-12-16 17.78 13.10 15.32 17.31 0.23 26.42 1.97 13.93 0.36 0.06 0.02 7.50 0.15 2.48 7.26 8.61 10.78 13.19 6.42 8.55
51 2023-12-23 16.81 14.09 16.78 12.50 0.18 28.53 2.27 16.69 0.45 0.05 0.02 10.44 0.19 3.30 7.29 9.16 8.97 15.23 7.40 9.92
52 2023-12-30 15.35 15.53 18.18 7.93 0.09 33.97 3.30 20.32 0.52 0.07 0.01 12.58 0.23 4.04 7.41 10.59 6.72 17.80 7.89 10.97
1 2024-01-06 14.51 15.03 14.49 4.54 0.08 30.93 4.58 19.59 0.60 0.07 0.00 10.34 0.22 3.87 7.10 10.34 5.26 15.62 8.37 10.84
2 2024-01-13 13.03 13.38 11.16 2.21 0.11 26.80 5.46 19.11 0.56 0.05 0.01 11.01 0.29 3.91 6.26 9.07 4.32 14.05 7.45 10.24
3 2024-01-20 11.35 12.21 10.28 1.40 0.04 28.20 9.13 18.95 0.79 0.14 0.01 12.75 0.35 4.70 6.13 8.43 3.42 15.56 7.90 10.95
4 2024-01-27 10.19 11.30 11.10 0.91 0.05 27.01 12.34 18.82 1.08 0.14 0.00 12.74 0.41 5.17 5.85 7.96 2.33 15.88 8.38 11.89
5 2024-02-03 9.34 11.51 11.28 0.76 0.03 23.66 15.78 19.15 1.48 0.28 0.01 14.84 0.41 5.77 5.91 7.15 2.19 16.33 8.77 12.14
6 2024-02-10 8.79 11.88 10.37 0.67 0.04 23.36 15.68 18.80 1.74 0.34 0.01 16.23 0.44 6.22 5.21 5.78 2.10 15.79 7.98 12.32
7 2024-02-17 8.12 11.79 9.43 0.57 0.02 24.22 15.48 18.53 2.18 0.29 0.00 17.02 0.35 6.56 4.49 5.13 2.16 15.53 8.42 11.89
8 2024-02-24 7.49 11.73 8.01 0.57 0.06 28.62 12.42 18.57 3.16 0.49 0.02 16.79 0.45 6.61 4.78 4.53 2.12 15.47 8.04 11.28
9 2024-03-02 7.05 11.18 6.84 0.63 0.12 29.30 11.04 18.13 3.99 0.70 0.00 15.45 0.74 6.25 3.79 3.70 2.50 15.62 7.59 10.52
Figure 2: Positive tests (%) of other respiratory viruses reported by participating laboratories in Canada by surveillance week compared to average and range from 2014-2015 to 2019-2020 season
Figure 2

Shaded area represents the maximum and minimum % of respiratory virus tests positive reported by week from seasons 2014-2015 to 2019-2020

Note: Changes to testing practices during the COVID-19 pandemic may cause substantial changes to indicator estimates from previous years. Collection of laboratory testing practice meta-data to understand these changes is ongoing. Interpret trends with caution.

Note: Data from week 11 of the 2019-2020 season onwards are excluded from the historical comparison due to the COVID-19 pandemic.

Note: % Tests Positive scale changes across the dashed line

Figure 2: Positive tests (%) of other respiratory viruses reported by participating laboratories in Canada by surveillance week compared to average and range from 2014-2015 to 2019-2020 season
Week Week end 2023-2024 EV/RV% 2022-2023 EV/RV% 2021-2022 EV/RV% Max EV/RV% Base Min EV/RV% Base Av EV/RV% Base 2023-2024 HPIV% 2022-2023 HPIV% 2021-2022 HPIV% Max HPIV% Base Min HPIV% Base Av HPIV% Base 2023-2024 ADV% 2022-2023 ADV% 2021-2022 ADV% Max ADV% Base Min ADV% Base Av ADV% Base 2023-2024 HMPV% 2022-2023 HMPV% 2021-2022 HMPV% Max HMPV% Base Min HMPV% Base Av HMPV% Base 2023-2024 HCoV% 2022-2023 HCoV% 2021-2022 HCoV% Max HCoV% Base Min HCoV% Base Av HCoV% Base
35 2023-09-02 12.50 15.47 21.96 27.19 22.44 24.71 1.99 2.80 5.99 3.16 1.15 2.44 1.62 2.28 1.18 1.74 0.99 1.43 0.34 1.80 0.23 2.04 0.10 0.78 0.28 0.53 1.05 0.76 0.18 0.45
36 2023-09-09 14.85 16.22 18.59 30.69 23.30 26.31 1.49 3.21 4.93 3.31 1.35 2.32 1.52 2.18 1.15 2.85 1.42 1.87 0.39 1.81 0.24 0.84 0.10 0.48 0.42 0.38 0.62 0.38 0.12 0.22
37 2023-09-16 18.29 21.73 27.46 33.58 27.74 31.69 1.60 3.02 5.97 3.26 1.65 2.40 1.47 2.10 0.81 2.44 1.38 1.86 0.39 1.38 0.17 1.61 0.00 0.51 0.23 0.28 0.44 0.56 0.00 0.26
38 2023-09-23 20.25 23.50 33.19 39.57 32.80 35.83 1.77 2.42 4.73 2.87 1.92 2.33 0.93 1.58 0.82 2.04 1.11 1.63 0.38 1.61 0.37 1.43 0.06 0.48 0.46 0.32 0.67 1.36 0.06 0.43
39 2023-09-30 18.52 22.89 30.01 40.59 34.87 37.68 1.32 3.09 8.12 3.01 1.70 2.24 1.15 2.21 1.14 2.27 1.04 1.66 0.51 1.43 0.17 0.72 0.05 0.29 0.28 0.59 0.62 0.66 0.07 0.45
40 2023-10-07 17.45 19.32 26.26 41.29 33.00 35.43 1.34 3.69 8.19 3.28 1.90 2.43 1.41 1.79 1.31 2.25 1.39 1.82 0.32 1.49 0.16 0.92 0.05 0.34 0.26 0.93 0.57 1.08 0.22 0.59
41 2023-10-14 15.74 16.70 22.91 33.62 26.94 29.93 1.28 3.52 10.46 3.70 1.96 2.75 1.38 2.03 1.37 1.91 1.28 1.70 0.37 1.66 0.20 0.95 0.04 0.46 0.32 0.99 1.69 0.70 0.00 0.34
42 2023-10-21 13.12 12.95 22.16 32.62 24.54 27.86 1.59 4.22 10.01 3.89 2.64 3.21 1.43 1.65 2.54 2.39 1.47 1.86 0.46 1.58 0.15 0.89 0.15 0.40 0.17 1.16 1.07 1.18 0.20 0.49
43 2023-10-28 12.52 11.05 19.64 28.73 21.67 24.95 1.21 4.41 9.38 3.98 3.18 3.54 1.48 1.79 1.15 2.42 1.63 1.96 0.46 1.79 0.36 1.64 0.12 0.58 0.38 1.86 1.05 2.35 0.27 0.75
44 2023-11-04 10.83 10.23 21.45 23.82 16.75 21.38 1.44 4.14 10.28 4.81 2.94 3.72 1.76 2.02 1.42 2.88 1.18 2.21 0.55 1.79 0.77 1.08 0.23 0.48 0.37 2.54 2.21 2.59 0.21 0.88
45 2023-11-11 10.70 7.77 22.39 23.08 15.17 20.56 1.65 3.90 9.97 5.42 2.53 4.01 1.45 1.99 1.63 2.68 2.02 2.42 0.60 2.06 0.64 1.30 0.04 0.77 0.42 3.00 2.57 2.74 0.52 0.96
46 2023-11-18 8.64 6.93 21.37 22.77 15.28 19.24 1.39 3.97 8.29 5.72 1.62 4.14 2.03 1.87 2.51 2.90 1.99 2.52 0.79 1.89 0.99 1.43 0.18 0.81 0.65 3.54 2.99 3.32 0.46 1.25
47 2023-11-25 7.63 4.88 18.54 20.84 12.15 16.09 1.55 3.63 7.04 7.00 2.36 4.72 1.90 1.89 1.94 2.95 1.83 2.35 1.00 1.78 1.01 2.02 0.09 0.90 0.65 3.24 3.90 3.26 0.37 1.25
48 2023-12-02 6.79 4.74 16.64 16.72 12.69 13.84 1.51 3.04 5.78 6.14 3.03 4.18 2.15 1.87 1.89 3.34 1.66 2.49 0.91 1.86 1.48 1.94 0.31 1.09 0.76 3.94 4.94 4.30 1.00 2.04
49 2023-12-09 6.00 4.09 14.57 16.32 10.72 13.07 1.39 3.03 3.97 5.65 2.94 4.19 1.83 1.68 2.48 3.03 1.84 2.50 1.20 1.93 1.22 2.80 0.49 1.48 1.12 4.48 6.58 5.19 0.84 2.53
50 2023-12-16 5.90 4.58 12.40 13.85 8.43 10.91 1.46 2.98 3.23 5.95 2.54 4.22 2.00 2.29 2.72 3.13 1.49 2.42 1.31 1.92 1.08 3.32 0.46 1.68 1.47 5.13 7.26 6.04 1.54 3.16
51 2023-12-23 5.57 4.49 9.95 14.18 8.81 10.48 1.35 3.09 3.01 6.71 2.94 3.95 1.55 1.76 2.54 3.20 1.36 2.04 1.59 2.23 1.20 4.39 0.37 2.47 1.77 5.28 8.11 6.68 1.87 3.72
52 2023-12-30 4.72 4.50 7.71 14.41 6.24 9.26 1.35 3.32 2.13 5.08 2.87 3.75 1.76 1.80 1.92 2.59 1.20 1.76 1.76 2.75 1.00 3.81 0.41 2.49 2.48 4.73 10.33 6.73 2.78 4.73
1 2024-01-06 4.79 4.19 5.71 11.09 4.36 7.42 1.48 3.63 1.84 5.08 2.68 3.34 1.48 1.88 1.84 2.67 0.85 1.54 2.20 2.94 0.72 4.45 0.28 2.74 3.07 4.40 9.27 7.77 3.07 5.16
2 2024-01-13 4.43 4.71 3.98 9.55 4.31 6.79 1.17 3.24 1.19 4.12 2.46 3.05 1.25 1.87 1.13 2.15 0.87 1.37 1.65 2.61 0.38 4.76 0.42 2.69 3.20 4.01 7.46 7.89 2.84 5.45
3 2024-01-20 4.59 6.68 3.12 8.42 4.44 6.01 1.08 2.92 0.76 3.25 2.59 2.82 1.11 1.97 1.34 2.10 1.15 1.45 2.20 2.56 0.24 5.56 0.47 3.18 3.90 3.46 4.97 7.90 4.17 6.11
4 2024-01-27 4.37 8.22 2.60 9.04 4.89 6.41 1.16 2.78 0.64 3.12 1.77 2.55 1.56 2.35 1.18 1.83 1.11 1.49 2.11 2.71 0.23 5.19 0.55 3.05 5.19 2.63 3.92 7.86 3.79 6.09
5 2024-02-03 5.02 8.94 3.02 9.79 6.06 6.94 1.45 2.70 0.48 3.48 1.70 2.39 1.62 2.44 1.57 1.93 1.36 1.62 2.27 2.96 0.25 5.70 0.58 3.34 5.10 3.20 2.83 8.49 4.55 6.84
6 2024-02-10 6.26 9.97 3.86 9.89 6.16 6.98 1.56 2.68 0.51 2.89 1.57 2.19 1.84 2.14 1.44 1.74 1.25 1.51 2.54 3.73 0.42 5.57 0.65 3.48 6.80 2.64 3.01 8.57 3.48 6.75
7 2024-02-17 6.18 9.87 4.46 8.95 6.00 7.04 1.54 2.63 0.44 3.20 1.42 2.11 1.22 2.31 1.52 1.61 1.30 1.51 2.82 4.41 0.44 6.05 1.45 3.96 7.73 3.14 3.24 8.02 4.35 6.52
8 2024-02-24 6.21 9.55 6.31 8.35 5.20 6.94 1.84 2.55 0.73 3.21 1.31 2.25 1.30 2.86 1.85 2.00 1.38 1.66 3.15 4.29 0.53 5.74 1.19 4.19 8.28 3.07 3.67 8.29 4.21 6.61
9 2024-03-02 6.40 9.77 7.80 9.03 5.73 7.75 2.41 3.07 0.60 3.35 1.41 2.44 1.67 2.75 1.90 1.92 1.09 1.40 3.95 4.72 0.40 6.42 1.87 4.46 7.30 3.41 3.32 8.01 5.09 6.87

Positive severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) tests

Figure 3: Positive severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) tests (%) in Canada by region by surveillance week
Figure 3

Note: Differences in positivity between jurisdictions can reflect differences in testing practices. Please interpret with caution.

Figure 3: Positive severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) tests (%) in Canada by region by surveillance week
Week Week end Can Tests SARS-CoV-2% Atl Tests SARS-CoV-2% QC Tests SARS-CoV-2% ON Tests SARS-CoV-2% Pr Tests SARS-CoV-2% BC Tests SARS-CoV-2% Terr Tests SARS-CoV-2%
35 2023-09-02 25656 14.40 2110 16.92 9351 16.30 6230 12.39 5192 10.59 2651 18.03 122 11.48
36 2023-09-09 28237 15.92 2346 20.20 10215 17.37 6939 15.46 5968 11.90 2640 16.70 129 17.05
37 2023-09-16 31790 16.49 2567 18.62 11678 18.11 7337 15.66 6948 12.12 3111 20.64 149 10.07
38 2023-09-23 36264 18.60 2775 18.38 13455 20.48 8514 18.38 7969 14.23 3377 22.59 174 10.34
39 2023-09-30 40587 19.59 3126 22.65 15431 21.30 9291 17.86 8658 15.65 3895 23.59 186 12.90
40 2023-10-07 42173 19.81 3544 24.41 15684 22.19 9349 17.61 9198 15.96 4202 20.75 196 12.24
41 2023-10-14 38463 17.55 3583 20.74 12605 18.30 8426 15.27 9625 16.77 4047 19.13 177 14.69
42 2023-10-21 39350 17.78 3493 19.70 12590 18.63 9300 16.86 10040 17.16 3737 17.13 190 17.37
43 2023-10-28 37286 17.89 3095 17.74 12003 18.29 9276 19.35 9450 17.05 3262 14.87 200 17.50
44 2023-11-04 38183 17.74 2965 17.91 11975 18.42 9060 17.09 10341 18.12 3648 15.98 194 15.98
45 2023-11-11 38722 18.17 3122 20.12 11815 19.90 9607 18.24 10448 16.98 3545 14.41 185 10.81
46 2023-11-18 41432 18.80 3186 22.47 13182 20.21 10470 20.36 11134 16.80 3245 12.14 215 5.12
47 2023-11-25 42304 19.31 3490 22.35 12938 21.52 10880 22.17 11422 15.57 3385 11.96 189 6.35
48 2023-12-02 44713 18.03 3648 21.98 14100 22.18 11174 20.06 11903 12.58 3639 10.31 249 7.63
49 2023-12-09 46876 17.53 3654 20.17 14467 22.78 11644 18.67 12452 12.41 4272 10.30 387 6.98
50 2023-12-16 48215 17.78 4065 18.60 15835 23.97 12142 18.69 12089 11.16 3746 10.25 338 6.21
51 2023-12-23 48372 16.81 4353 15.81 16682 22.12 11548 18.73 11472 9.91 3952 10.55 365 9.86
52 2023-12-30 46997 15.35 4234 14.67 15739 19.65 11522 17.68 10314 9.95 4930 8.64 258 5.04
1 2024-01-06 48060 14.51 4471 12.68 15874 17.71 11545 16.83 10577 10.62 5300 9.57 293 7.17
2 2024-01-13 44189 13.03 4333 11.98 13921 14.75 11346 14.29 9475 9.91 4862 12.48 252 6.35
3 2024-01-20 38190 11.35 3750 10.64 11599 11.60 9942 12.87 8591 9.92 4141 10.92 167 4.19
4 2024-01-27 37089 10.19 3784 9.49 11052 9.79 9238 11.40 8358 8.95 4459 11.89 198 4.04
5 2024-02-03 36771 9.34 3908 8.75 10995 8.58 9011 9.75 8265 9.56 4420 10.63 172 5.81
6 2024-02-10 34740 8.79 3499 8.80 10544 7.33 8519 8.48 8042 10.12 3940 10.74 196 7.14
7 2024-02-17 35098 8.12 3185 8.92 11071 6.64 8901 7.48 8021 9.21 3722 11.04 198 7.07
8 2024-02-24 34144 7.49 3098 8.23 10923 5.10 8078 6.82 7890 8.66 3872 12.45 283 10.25
9 2024-03-02 32915 7.05 2992 7.02 10476 4.88 7465 6.28 7792 8.44 3973 11.50 217 6.45

Positive influenza (Flu) tests

Figure 4: Positive influenza (Flu) tests (%) in Canada by region by surveillance week
Figure 4
Figure 4: Positive influenza (Flu) tests (%) in Canada by region by surveillance week
Week Week end Can Tests Can A% Can B% Atl Tests Atl A% Atl B% QC Tests QC A% QC B% ON Tests ON A% ON B% Pr Tests Pr A% Pr B% BC Tests BC A% BC B% Terr Tests Terr A% Terr B%
35 2023-09-02 14543 0.69 0.06 984 0.00 0.00 3339 0.24 0.15 4324 0.39 0.09 3654 0.57 0.00 2158 2.46 0.00 84 2.38 0.00
36 2023-09-09 15430 0.43 0.06 1047 0.00 0.00 3649 0.19 0.03 4455 0.31 0.09 4069 0.37 0.05 2117 1.46 0.09 93 0.00 0.00
37 2023-09-16 18035 0.48 0.03 1216 0.08 0.00 4174 0.41 0.07 5145 0.29 0.00 4705 0.40 0.04 2703 1.29 0.04 92 0.00 0.00
38 2023-09-23 20121 0.51 0.02 1388 0.07 0.00 4734 0.30 0.00 5652 0.21 0.05 5325 0.62 0.02 2928 1.47 0.00 94 0.00 0.00
39 2023-09-30 21529 0.51 0.09 1403 0.14 0.07 4847 0.21 0.08 6186 0.37 0.11 5370 0.48 0.11 3598 1.36 0.06 125 0.00 0.00
40 2023-10-07 23658 0.64 0.05 1775 0.34 0.00 5628 0.37 0.04 6456 0.31 0.00 5803 0.74 0.16 3878 1.60 0.05 118 0.00 0.00
41 2023-10-14 23208 0.49 0.03 1938 0.57 0.00 4978 0.22 0.06 6283 0.30 0.00 6067 0.73 0.05 3828 0.73 0.03 114 0.00 0.00
42 2023-10-21 24067 0.73 0.08 2029 0.69 0.05 5110 0.37 0.02 6834 0.47 0.07 6370 1.13 0.13 3599 1.06 0.11 125 0.00 0.00
43 2023-10-28 23268 1.16 0.10 1979 0.96 0.00 5450 0.64 0.11 6814 0.50 0.06 5872 2.33 0.17 3039 1.45 0.10 114 0.88 0.00
44 2023-11-04 25317 2.63 0.10 1914 1.25 0.05 5705 0.63 0.07 6996 0.51 0.06 6996 6.80 0.17 3562 2.58 0.11 144 2.08 0.00
45 2023-11-11 26520 4.93 0.14 2069 2.03 0.14 5970 0.84 0.07 7240 1.22 0.07 7656 12.87 0.26 3460 3.96 0.14 125 4.00 0.00
46 2023-11-18 28583 7.24 0.16 2219 3.11 0.09 6454 1.36 0.09 7797 2.68 0.15 8734 18.14 0.26 3258 3.59 0.12 121 2.48 0.00
47 2023-11-25 29879 8.81 0.12 2521 4.60 0.04 6561 2.04 0.06 8070 2.69 0.02 9078 21.15 0.28 3517 6.43 0.09 132 15.15 0.00
48 2023-12-02 32859 11.62 0.26 2743 4.89 0.11 7199 3.78 0.15 8447 4.45 0.17 10485 24.44 0.47 3836 10.79 0.21 149 38.93 0.00
49 2023-12-09 34573 14.74 0.29 2817 9.66 0.11 8141 7.14 0.12 8466 7.08 0.21 11298 26.93 0.57 3590 13.12 0.11 261 49.81 0.00
50 2023-12-16 38612 15.32 0.36 3363 12.73 0.09 10087 11.63 0.12 9265 8.47 0.41 11116 24.56 0.71 4496 14.23 0.16 285 56.49 0.00
51 2023-12-23 40837 16.78 0.45 3820 19.08 0.31 12090 15.38 0.12 9246 11.39 0.51 10654 21.67 0.91 4747 16.64 0.29 280 40.36 0.00
52 2023-12-30 42480 18.18 0.52 3874 20.99 0.36 13501 19.37 0.07 9830 15.02 0.63 9718 17.62 1.25 5352 18.89 0.24 205 46.34 0.00
1 2024-01-06 43260 14.49 0.60 4132 17.91 0.36 13858 17.30 0.22 9869 11.67 0.54 9519 11.29 1.45 5634 14.55 0.39 248 33.47 0.00
2 2024-01-13 40232 11.16 0.56 3864 15.79 0.31 12702 15.32 0.19 9980 9.08 0.59 8490 5.94 1.33 4963 9.83 0.32 233 15.88 0.43
3 2024-01-20 35211 10.28 0.79 3422 14.23 0.94 11099 14.72 0.36 8812 8.65 0.45 7341 4.09 2.07 4397 9.71 0.34 140 5.71 0.00
4 2024-01-27 35174 11.10 1.08 3461 14.59 1.36 11277 17.65 0.28 8274 8.87 0.59 7261 2.31 2.91 4722 10.67 0.87 179 2.79 0.00
5 2024-02-03 35522 11.28 1.48 3608 14.61 2.02 12036 19.09 0.61 7738 8.30 1.02 7380 1.91 3.20 4626 8.58 1.25 134 2.24 2.99
6 2024-02-10 33996 10.37 1.74 3230 12.38 1.98 11857 18.01 1.05 7402 7.23 1.50 7229 1.77 3.28 4119 7.99 1.24 159 0.00 3.14
7 2024-02-17 33916 9.43 2.18 2882 8.78 2.74 11966 16.61 1.53 7689 7.40 1.87 7228 1.58 3.62 4006 6.81 1.40 145 1.38 11.03
8 2024-02-24 33293 8.01 3.16 2914 7.41 2.88 11749 14.23 2.63 7190 6.38 2.35 7027 1.07 5.64 4225 5.80 1.82 188 0.53 9.57
9 2024-03-02 31343 6.84 3.99 2834 7.13 4.13 11384 10.91 4.30 6453 5.83 2.88 6358 1.57 5.63 4148 5.30 1.90 166 2.41 12.65

Positive respiratory syncytial virus (RSV) tests

Figure 5: Positive respiratory syncytial virus (RSV) tests (%) in Canada by region by surveillance week
Figure 5
Figure 5: Positive respiratory syncytial virus (RSV) tests (%) in Canada by region by surveillance week
Week Week end Can Tests RSV% Atl Tests RSV% QC Tests RSV% ON Tests RSV% Pr Tests RSV% BC Tests RSV% Terr Tests RSV%
35 2023-09-02 13610 0.58 969 0.00 2540 1.14 4324 0.81 3535 0.20 2158 0.32 84 1.19
36 2023-09-09 14361 0.71 1047 0.57 2750 1.64 4455 0.88 3915 0.18 2101 0.24 93 0.00
37 2023-09-16 16808 0.82 1201 0.25 3181 1.67 5138 1.01 4494 0.38 2702 0.41 92 1.09
38 2023-09-23 18782 1.15 1381 1.30 3652 2.27 5652 1.43 5075 0.37 2928 0.51 94 0.00
39 2023-09-30 20217 1.14 1392 0.79 3788 2.38 6186 1.42 5128 0.43 3598 0.56 125 0.00
40 2023-10-07 22042 1.35 1761 0.28 4333 2.75 6456 1.95 5496 0.36 3878 0.72 118 0.00
41 2023-10-14 21748 1.80 1927 0.83 3897 3.70 6281 2.48 5701 0.63 3828 1.04 114 0.00
42 2023-10-21 22479 2.38 2015 0.69 3889 4.78 6834 3.72 6017 0.58 3599 1.25 125 0.00
43 2023-10-28 21745 3.25 1970 1.78 4234 6.24 6814 4.21 5574 1.22 3039 1.74 114 0.00
44 2023-11-04 23657 4.07 1904 2.15 4506 6.88 6997 5.80 6544 1.79 3562 2.36 144 2.78
45 2023-11-11 24764 5.12 2058 2.77 4680 7.97 7241 7.62 7201 2.14 3459 3.58 125 6.40
46 2023-11-18 26517 5.85 2195 2.41 4910 10.14 7796 7.91 8237 2.87 3258 4.27 121 7.44
47 2023-11-25 27491 6.81 2363 4.70 4975 11.82 8068 8.66 8508 3.24 3445 5.28 132 11.36
48 2023-12-02 30258 6.99 2549 5.88 5533 11.46 8447 8.49 9797 3.57 3783 6.66 149 8.72
49 2023-12-09 31232 7.38 2665 7.69 5930 11.11 8465 7.40 10436 4.53 3475 9.35 261 6.90
50 2023-12-16 34607 7.26 3004 8.46 7537 9.73 9261 5.99 10173 5.17 4347 9.50 285 10.53
51 2023-12-23 35986 7.29 3258 9.45 8774 9.14 9244 4.64 9818 6.47 4615 9.36 277 6.14
52 2023-12-30 37638 7.41 3431 8.57 9849 7.53 9829 4.62 9129 8.48 5196 9.49 204 15.69
1 2024-01-06 37934 7.10 3630 9.12 9953 7.31 9871 4.03 8828 7.56 5404 9.88 248 13.71
2 2024-01-13 35286 6.26 3383 9.16 9029 6.14 9975 3.27 7930 7.65 4737 7.81 232 17.67
3 2024-01-20 30825 6.13 2936 9.91 7837 5.82 8808 2.99 6890 8.21 4214 6.76 140 20.00
4 2024-01-27 30616 5.85 3067 10.01 7786 5.48 8260 2.62 6810 6.83 4514 7.35 179 24.02
5 2024-02-03 30446 5.91 3235 9.52 7985 5.07 7736 2.12 6932 8.18 4426 7.32 132 24.24
6 2024-02-10 29075 5.21 2949 10.07 7832 4.60 7404 1.62 6794 6.74 3937 6.27 159 20.75
7 2024-02-17 29027 4.49 2610 8.12 7969 4.56 7689 1.16 6768 6.04 3846 4.91 145 27.59
8 2024-02-24 28919 4.78 2715 7.18 8172 4.55 7190 1.14 6598 6.84 4057 5.57 187 29.41
9 2024-03-02 27468 3.79 2712 6.42 8160 3.96 6454 1.26 5963 4.31 4013 4.41 166 18.07

Positive human parainfluenza virus (HPIV) tests

Figure 6: Positive human parainfluenza virus (HPIV) tests (%) in Canada by region by surveillance week
Figure 6
Figure 6: Positive human parainfluenza virus (HPIV) tests (%) in Canada by region by surveillance week
Week Week End Can Tests HPIV% Atl Tests HPIV% QC Tests HPIV% ON Tests HPIV% Pr Tests HPIV% BC Tests HPIV%
35 2023-09-02 6234 1.99 362 1.38 847 3.90 3406 1.85 984 1.02 635 2.05
36 2023-09-09 6321 1.49 355 1.69 868 2.19 3420 1.43 1133 0.97 545 1.65
37 2023-09-16 7419 1.60 401 2.49 1053 2.18 3886 1.34 1326 1.06 753 2.66
38 2023-09-23 8139 1.77 430 2.79 1122 2.85 4366 1.74 1445 0.90 776 1.42
39 2023-09-30 8627 1.32 401 1.25 1117 1.88 4948 1.33 1415 1.06 746 0.94
40 2023-10-07 8791 1.34 467 3.43 1178 2.04 4850 1.20 1541 0.39 755 1.85
41 2023-10-14 8879 1.28 491 1.63 1094 1.37 4898 1.16 1638 1.04 758 2.24
42 2023-10-21 9281 1.59 498 2.21 1050 1.52 5293 1.51 1707 1.46 733 2.18
43 2023-10-28 9085 1.21 474 1.48 1063 1.98 5223 0.96 1656 0.85 669 2.69
44 2023-11-04 9496 1.44 492 2.24 1067 2.06 5215 1.00 1938 1.24 784 3.57
45 2023-11-11 9826 1.65 467 2.78 1257 1.83 5242 1.11 2076 1.35 784 5.10
46 2023-11-18 10441 1.39 500 2.20 1426 1.33 5505 1.24 2191 0.87 819 3.42
47 2023-11-25 10873 1.55 620 1.77 1442 1.04 5708 1.47 2196 1.18 907 3.53
48 2023-12-02 11676 1.51 676 2.37 1587 1.32 5967 1.39 2463 1.10 983 2.95
49 2023-12-09 11621 1.39 668 1.65 1630 1.10 6040 1.44 2537 1.14 746 2.14
50 2023-12-16 12631 1.46 730 1.92 1664 0.72 6696 1.36 2459 1.46 1082 2.96
51 2023-12-23 12646 1.35 768 1.56 1857 0.54 6421 1.46 2406 0.79 1194 3.02
52 2023-12-30 12870 1.35 709 1.55 2004 0.85 6809 1.29 2167 0.97 1181 3.13
1 2024-01-06 13435 1.48 812 1.72 2046 0.59 7059 1.60 2289 1.18 1229 2.69
2 2024-01-13 13189 1.17 924 1.73 1882 0.53 7137 1.16 2118 1.09 1128 1.95
3 2024-01-20 11421 1.08 704 1.28 1843 0.49 6099 1.18 1772 1.13 1003 1.30
4 2024-01-27 11007 1.16 834 0.72 1793 0.28 5677 1.41 1707 1.41 996 1.31
5 2024-02-03 11179 1.45 794 1.26 1833 0.55 5534 1.66 1933 1.86 1085 1.29
6 2024-02-10 10714 1.56 782 0.77 1832 0.49 5194 1.73 1937 1.55 969 3.30
7 2024-02-17 10731 1.54 619 1.29 1863 0.54 5369 1.42 1898 2.32 982 2.75
8 2024-02-24 10455 1.84 632 0.47 1827 1.59 5115 1.82 1902 2.21 979 2.55
9 2024-03-02 10000 2.41 587 1.02 1796 1.11 5089 2.85 1526 2.88 1002 2.59

Positive adenovirus (ADV) tests

Figure 7: Positive adenovirus (ADV) tests (%) in Canada by region by surveillance week
Figure 7
Figure 7: Positive adenovirus (ADV) tests (%) in Canada by region by surveillance week
Week Week End Can Tests ADV% Atl Tests ADV% QC Tests ADV% ON Tests ADV% Pr Tests ADV% BC Tests ADV%
35 2023-09-02 6238 1.62 362 1.93 851 2.70 3406 0.91 984 2.44 635 2.52
36 2023-09-09 6332 1.52 355 1.97 879 2.28 3420 0.82 1133 2.03 545 3.30
37 2023-09-16 7438 1.47 401 2.00 1071 2.43 3887 0.90 1326 1.96 753 1.86
38 2023-09-23 8149 0.93 429 1.17 1134 1.06 4365 0.62 1445 1.59 776 1.16
39 2023-09-30 8614 1.15 401 1.00 1129 2.04 4923 0.69 1415 1.63 746 2.01
40 2023-10-07 8809 1.41 467 2.36 1195 2.85 4851 0.66 1541 1.69 755 2.78
41 2023-10-14 8913 1.38 491 1.63 1111 3.42 4915 0.75 1638 1.47 758 2.11
42 2023-10-21 9286 1.43 498 1.20 1058 3.59 5292 0.76 1705 1.47 733 3.27
43 2023-10-28 9099 1.48 474 2.74 1077 3.62 5223 0.69 1656 1.63 669 2.99
44 2023-11-04 9514 1.76 492 2.03 1085 3.87 5215 1.04 1938 2.12 784 2.55
45 2023-11-11 9843 1.45 467 2.57 1274 2.98 5242 0.92 2076 1.64 784 1.40
46 2023-11-18 10452 2.03 500 4.60 1437 4.31 5505 0.94 2191 1.92 819 4.03
47 2023-11-25 10921 1.90 620 2.74 1461 3.97 5712 1.07 2195 1.50 911 3.84
48 2023-12-02 11737 2.15 676 3.25 1613 3.84 5967 1.36 2462 2.03 983 3.05
49 2023-12-09 11699 1.83 668 2.84 1652 3.75 6041 1.18 2537 1.26 746 3.62
50 2023-12-16 12719 2.00 730 2.19 1681 3.09 6696 1.78 2459 1.67 1082 2.40
51 2023-12-23 12033 1.55 768 1.82 1875 2.61 5726 0.89 2406 1.45 1194 3.02
52 2023-12-30 10982 1.76 709 2.12 2010 2.49 4852 0.80 2166 1.43 1181 4.74
1 2024-01-06 11676 1.48 812 1.11 2050 2.20 5219 0.75 2289 1.14 1229 4.15
2 2024-01-13 12085 1.25 924 1.52 1901 2.31 5943 0.59 2118 1.32 1126 2.49
3 2024-01-20 11459 1.11 704 1.56 1851 1.19 6091 0.64 1772 1.35 1003 2.89
4 2024-01-27 11062 1.56 834 2.88 1807 2.32 5675 0.78 1706 1.64 996 3.41
5 2024-02-03 11223 1.62 794 2.90 1841 2.55 5534 0.74 1933 1.55 1085 3.59
6 2024-02-10 10761 1.84 782 3.45 1852 2.59 5192 0.67 1935 1.45 969 5.88
7 2024-02-17 10779 1.22 619 1.29 1875 1.97 5369 0.60 1898 1.16 982 2.95
8 2024-02-24 10525 1.30 632 2.06 1839 2.01 5115 0.80 1902 0.89 979 2.96
9 2024-03-02 10058 1.67 587 4.26 1811 2.21 5089 0.98 1526 1.18 1002 2.99

Positive human metapneumovirus (HMPV) tests

Figure 8: Positive human metapneumovirus (HMPV) tests (%) in Canada by region by surveillance week
Figure 8
Figure 8: Positive human metapneumovirus (HMPV) tests (%) in Canada by region by surveillance week
Week Week End Can Tests HMPV% Atl Tests HMPV% QC Tests HMPV% ON Tests HMPV% Pr Tests HMPV% BC Tests HMPV%
35 2023-09-02 6260 0.34 362 0.00 848 1.42 3407 0.21 1008 0.10 635 0.16
36 2023-09-09 6354 0.39 355 0.28 867 1.38 3423 0.20 1164 0.26 545 0.37
37 2023-09-16 7455 0.39 401 0.50 1053 0.76 3886 0.36 1362 0.07 753 0.53
38 2023-09-23 8194 0.38 429 0.00 1124 1.07 4365 0.14 1500 0.13 776 1.42
39 2023-09-30 8680 0.51 401 0.25 1118 0.89 4948 0.36 1467 0.34 746 1.34
40 2023-10-07 8828 0.32 457 0.44 1180 0.76 4853 0.14 1583 0.32 755 0.66
41 2023-10-14 8911 0.37 484 0.00 1096 1.00 4915 0.20 1658 0.12 758 1.32
42 2023-10-21 9321 0.46 498 0.20 1050 1.33 5298 0.32 1742 0.17 733 1.09
43 2023-10-28 9083 0.46 474 0.63 1066 1.41 5200 0.31 1674 0.18 669 0.75
44 2023-11-04 9519 0.55 492 0.20 1070 1.96 5218 0.17 1955 0.61 784 1.15
45 2023-11-11 9825 0.60 467 0.21 1256 2.15 5244 0.21 2074 0.63 784 0.89
46 2023-11-18 10315 0.79 500 0.40 1426 2.38 5505 0.36 2180 0.37 704 2.56
47 2023-11-25 10921 1.00 620 0.97 1442 2.57 5715 0.44 2211 0.59 911 2.96
48 2023-12-02 11703 0.91 676 0.89 1585 2.33 5965 0.47 2458 0.49 983 2.34
49 2023-12-09 11654 1.20 668 1.20 1635 2.39 6037 0.61 2513 1.95 746 0.94
50 2023-12-16 12683 1.31 730 1.78 1669 2.52 6707 0.63 2424 1.61 1082 2.77
51 2023-12-23 12659 1.59 768 1.56 1857 2.48 6415 0.78 2361 2.50 1194 2.85
52 2023-12-30 12881 1.76 709 2.26 2006 2.14 6809 0.98 2112 2.27 1181 4.49
1 2024-01-06 13432 2.20 812 1.85 2048 2.15 7012 1.07 2254 3.99 1229 5.78
2 2024-01-13 13214 1.65 924 1.41 1887 1.59 7144 0.62 2060 3.88 1126 4.26
3 2024-01-20 11426 2.20 704 1.56 1837 2.34 6103 1.23 1741 4.19 1003 4.79
4 2024-01-27 11026 2.11 834 1.92 1793 1.78 5678 1.13 1681 4.34 996 4.82
5 2024-02-03 11160 2.27 794 2.39 1831 2.46 5534 1.36 1880 2.87 1085 5.44
6 2024-02-10 10709 2.54 782 2.94 1828 2.63 5191 1.58 1908 2.62 969 7.12
7 2024-02-17 10757 2.82 619 2.91 1864 3.70 5376 2.14 1880 1.91 982 6.62
8 2024-02-24 10425 3.15 632 3.96 1827 2.79 5114 2.62 1815 2.31 979 7.76
9 2024-03-02 9994 3.95 587 3.75 1798 5.01 5089 3.34 1475 2.58 1002 7.49

Positive enterovirus/rhinovirus (EV/RV) tests

Figure 9: Positive enterovirus/rhinovirus (EV/RV) tests (%) in Canada by region by surveillance week
Figure 9
Figure 9: Positive enterovirus/rhinovirus (EV/RV) tests (%) in Canada by region by surveillance week
Week Week End Can Tests EV/RV% Atl Tests EV/RV% QC Tests EV/RV% ON Tests EV/RV% Pr Tests EV/RV% BC Tests EV/RV%
35 2023-09-02 5345 12.50 362 20.72 N.A. N.A. 3409 10.44 966 14.60 608 15.79
36 2023-09-09 5414 14.85 355 25.35 N.A. N.A. 3423 12.80 1119 16.80 516 17.05
37 2023-09-16 6331 18.29 401 23.69 N.A. N.A. 3887 16.08 1314 22.37 722 19.81
38 2023-09-23 6991 20.25 429 27.51 N.A. N.A. 4365 17.11 1428 25.14 747 24.63
39 2023-09-30 7479 18.52 401 26.43 N.A. N.A. 4948 15.74 1398 22.17 715 25.31
40 2023-10-07 7559 17.45 467 23.55 N.A. N.A. 4853 14.77 1515 20.99 706 23.80
41 2023-10-14 7762 15.74 491 23.01 N.A. N.A. 4915 13.77 1612 16.00 717 23.15
42 2023-10-21 8204 13.12 498 22.09 N.A. N.A. 5298 10.82 1681 13.50 695 22.16
43 2023-10-28 7977 12.52 474 16.03 N.A. N.A. 5227 9.95 1624 15.58 637 23.23
44 2023-11-04 8385 10.83 492 17.07 N.A. N.A. 5218 8.39 1916 12.21 736 20.52
45 2023-11-11 8530 10.70 467 16.70 N.A. N.A. 5244 8.68 2051 10.48 743 21.53
46 2023-11-18 8958 8.64 500 14.20 N.A. N.A. 5506 6.79 2161 8.42 779 18.87
47 2023-11-25 9428 7.63 620 11.94 N.A. N.A. 5716 5.86 2187 7.59 883 15.63
48 2023-12-02 10068 6.79 676 9.76 N.A. N.A. 5970 5.19 2427 6.47 959 15.43
49 2023-12-09 9980 6.00 668 6.74 N.A. N.A. 6046 4.50 2516 6.20 695 17.70
50 2023-12-16 11005 5.90 730 7.81 N.A. N.A. 6708 4.62 2437 4.97 1059 14.45
51 2023-12-23 10798 5.57 768 6.51 N.A. N.A. 6434 3.73 2378 5.89 1154 14.47
52 2023-12-30 10880 4.72 709 5.50 N.A. N.A. 6808 3.30 2154 4.83 1145 12.31
1 2024-01-06 11367 4.79 812 4.43 N.A. N.A. 7012 3.76 2269 5.51 1197 9.69
2 2024-01-13 11329 4.43 924 4.22 N.A. N.A. 7146 3.20 2097 5.05 1089 11.48
3 2024-01-20 9562 4.59 704 4.26 N.A. N.A. 6103 3.16 1749 6.40 968 10.02
4 2024-01-27 9212 4.37 834 4.68 N.A. N.A. 5678 3.12 1695 6.02 961 8.43
5 2024-02-03 9317 5.02 794 5.54 N.A. N.A. 5534 3.27 1918 7.66 1035 9.08
6 2024-02-10 8831 6.26 782 8.82 N.A. N.A. 5191 4.26 1909 7.54 918 12.42
7 2024-02-17 8854 6.18 619 6.30 N.A. N.A. 5376 4.35 1882 8.29 941 12.01
8 2024-02-24 8642 6.21 632 5.85 N.A. N.A. 5114 4.99 1893 7.24 945 10.69
9 2024-03-02 8189 6.40 587 6.30 N.A. N.A. 5089 4.62 1509 7.42 961 14.36

Positive human coronavirus (HCoV) tests

Figure 10: Positive human coronavirus (HCoV) tests (%) in Canada by region by surveillance week
Figure 10
Figure 10: Positive human coronavirus (HCoV) tests (%) in Canada by region by surveillance week
Week Week End Can Tests HCoV% Atl Tests HCoV% QC Tests HCoV% ON Tests HCoV% Pr Tests HCoV% BC Tests HCoV%
35 2023-09-02 5054 0.28 362 0.00 847 0.47 2230 0.13 1007 0.60 608 0.16
36 2023-09-09 5195 0.42 355 0.56 868 0.81 2285 0.09 1171 0.77 516 0.39
37 2023-09-16 6174 0.23 401 0.50 1053 0.47 2636 0.23 1362 0.00 722 0.14
38 2023-09-23 6796 0.46 429 0.00 1122 0.80 2995 0.40 1503 0.40 747 0.54
39 2023-09-30 7026 0.28 401 0.00 1117 0.45 3325 0.21 1468 0.48 715 0.14
40 2023-10-07 7305 0.26 467 0.21 1178 0.08 3390 0.18 1587 0.25 683 1.02
41 2023-10-14 7435 0.32 491 0.20 1094 0.73 3461 0.12 1672 0.60 717 0.14
42 2023-10-21 7697 0.17 498 0.20 1050 0.48 3707 0.05 1747 0.23 695 0.14
43 2023-10-28 7576 0.38 473 0.42 1065 0.38 3707 0.30 1694 0.53 637 0.47
44 2023-11-04 7754 0.37 476 0.21 1067 0.28 3508 0.43 1967 0.20 736 0.82
45 2023-11-11 8119 0.42 467 0.86 1187 0.51 3607 0.28 2115 0.38 743 0.81
46 2023-11-18 8674 0.65 500 0.20 1324 0.98 3838 0.42 2233 0.99 779 0.51
47 2023-11-25 9070 0.65 620 0.65 1357 0.96 3977 0.55 2233 0.54 883 0.91
48 2023-12-02 9880 0.76 676 0.74 1518 1.05 4241 0.42 2486 0.72 959 1.88
49 2023-12-09 9440 1.12 668 1.20 1523 1.64 4007 0.57 2547 1.33 695 2.30
50 2023-12-16 10458 1.47 730 0.41 1583 1.58 4616 1.47 2470 1.58 1059 1.79
51 2023-12-23 10481 1.77 768 1.30 1765 2.10 4389 1.66 2405 1.58 1154 2.43
52 2023-12-30 10327 2.48 709 1.55 1885 2.97 4422 2.49 2166 2.08 1145 2.97
1 2024-01-06 10904 3.07 812 2.96 1861 2.10 4722 3.37 2312 2.85 1197 3.93
2 2024-01-13 10898 3.20 924 3.03 1719 2.50 5030 3.14 2136 3.93 1089 3.31
3 2024-01-20 9525 3.90 704 5.11 1698 4.18 4360 3.78 1795 3.79 968 3.20
4 2024-01-27 9111 5.19 834 5.28 1640 5.49 3941 5.76 1735 4.27 961 3.95
5 2024-02-03 9137 5.10 794 4.79 1647 5.10 3717 6.27 1944 3.34 1035 4.44
6 2024-02-10 8766 6.80 782 5.37 1653 9.50 3456 7.00 1957 5.01 918 6.21
7 2024-02-17 8846 7.73 619 6.30 1700 8.12 3661 8.96 1925 6.39 941 5.95
8 2024-02-24 8546 8.28 632 7.28 1646 10.27 3417 8.17 1906 7.03 945 8.47
9 2024-03-02 8168 7.30 587 6.47 1636 7.58 3443 8.45 1541 5.71 961 5.72

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